Consew 225 Questions

Trying to help a friend resurrect an old Consew 225 to sew leather tack and harnasses.

Got the machine cleaned up and running by using the manuals I found online, but I'm having incredible trouble with the thread tensions.

I've followed all the instructions in the manual about threading and adjusting tension, but I can't seem to get the top tension loose enough or the bobbin tension tight enough to keep the machine from pulling the bobbin thread up through the work.

Trying to help a friend resurrect an old Consew 225 to sew leather tack and harnasses.

Got the machine cleaned up and running by using the manuals I found online, but I'm having incredible trouble with the thread tensions.

I've followed all the instructions in the manual about threading and adjusting tension, but I can't seem to get the top tension loose enough or the bobbin tension tight enough to keep the machine from pulling the bobbin thread up through the work.